Means of connection between regulator-valves and governor-stems



n4 PETERS. PHOT-LITHOGRAFNER, WASHINGTON. D C,

UNITED STATES PATENT @FFIQE JNO. TREMPER, OF PHILADELPHIA, PENNSYLVANIA.

MEANS OF CONNECTION BETWEEN REGULATOR-VALVES* AND GOVERNOR-STEMS.

Speccaton of Letters Patent No. 13,889, dated December 4, 1855.

To all 'whom it may concern:

Be it known that I, JOHN TREMPER, of the city and county of Philadelphiaand State of Pennsylvania, have invented a new and useful Method ofEifecting the Connection Between the Governor and the Throttle- Valve orCut-Off of the Steam-Engine; and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being hadto the accompanying drawings, forming part of this specification, inwhich- Figure 1, is a front view, showing the connection of the throttlevalve lever and governor. Fig. 2, is a side view of the same, and Fig.3, is a front view of a modification of the connection.

Similar letters of reference indicate corresponding parts in the severalfigures.

In the ordinary method of applying the governor, no provision is madefor the control of the engine, in case of the governor becoming suddenlyinoperative and if by reason of its driving belt or gear giving way orby other accidental cause it is stopped or thrown out of operation,still remaining connected with the valve, it leaves the valve wide openand the steam full on the engine, which, in many cases causes the speedto be suddenly increased to such a degree that much injury is done to itand to the machin ery driven by it.

The principal object of this invention, which I call a Safety leverattachment, is to detach the governor entirely from the valve theinstant it becomes inoperative to allow the valve to be closed by aspring or weight applied for the purpose, thereby stopping the engine.

Another object is to regulate the movement of the valve while thegovernor is in operation.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

A, represents the spindle of the throttle or regulating valve, byturning which the vale is opened, and B, Figs. l and 2, a lever securedto the said spindle for the purpose of turning it. This lever contains acurved slot a, at the inner extremity of which, or the end nearest thespindle, there is a recess or opening on one side.

C, is the connecting rod which connects the valve lever B, with thegovernor slide. The connection between this rod and the valve lever iseffected by means of a slot c, and a pin (Z, the foimer made 1n, and thelatter secured to, a plate D, which 1s secured to the lower end of theconnecting rod, the

causes the'pin d, to work up and down the slot a., giving a less openingto the valve by an upward and a greater opening by a downward motion.Thile the governor has any motion at all, the pin 6l, never descends aslow as the opening 7), of the slot, but if the governor ceases torevolve and the balls, vanes or their equivalents, and the governorslide, fall to the lowest position, the pin arrives oposite the opening,as shown in red outline in Fig. 1, and the valve lever is then thrownsidewise as shown in blue outline, far enough to detach itself entirelyfrom the pin and close the valve, by the action either of a springapplied to the spindle or by a weight. This spring or weight is notshown, as its action will be intelligible to any person versed inmechanics. The upper part of the slot c, is a little bent, as shown, inFig. l, to give the bottom of the rod, such a lateral movement, as thegovernor arrives at its lowest position, when inoperative, as to assistin disengaging the pin CZ, from the slot a. The slot a, also serves thepurpose of giving the valve any desired motion, by making it of propercurved or angular form. The curved form represented, gives an increasedmovement to the valve within a given length of range of the governorslide, as the valve opens wider, and vice versa, this being the mostdesirable movement.

Instead of having a slot a, the valve lever may be made without a slot,the same as if the side d, of the slot were removed entirely leavingonly a bearing for one side of the pin d, which is all that is necessaryas the spring or weight which is employed to close the valve will keepthe valve lever in proper contact with the pin d.

In the modification of my invention, which is exhibited in Fig. 3, thevalve lever carries the pin cl, which is fiXed therein and the slot a,or bearing for the said pin and the escape opening Z), are made in theplate D, attached to the connecting rod C, by

which it is obvious the same effect will be obtained as by attaching thepin to the plate and providing a slot or bearing for it in the valvelever.

In either of the above modes of carrying out my invention I make the pind, adjustable for the purpose of giving the valve more or less openingand the engine more or less steam, and therefore I fit it to a slot f,in the plate D, as shown in Fig. 1, or in the lever B, as shown in Fig.2, as the case may require, so that I can move it as may be required,securing it in the desired position by a shoulder and a nut g.

The method of applying the invention to a cut-oft, .is substantially thesame as that of applying it to a throttle or regulator valve, the leverB, the traveling pin CZ, and the escape opening or notch b, being allcombined in substantially the same manner.

The same result as has been Vabove described may be obtained by astraight or curved toothed rack on the connecting rod C, and aconcentric toothed segment on the valve spindle, the rack being, whenthe governor becomes inoperative, allowed to fall out of gear with thesegment.

lVhat I claim as my invention and desire to secure by Letters Patent,is,

Effecting the connection between the throttle valve cut-ott or otherregulator valve and the governor stem, by means of a pin d, workingwithin a slot a, or against a bearing face, the said slot or bearingface having an escape opening b, opposite to which the pin d, is broughtby the cessation of the operation of the governor, whereby the pin isallowed to escape from the said slot or bearing face, and thereby effectthe disconnection of the governor from the valve or cut-oli1instantaneously, to allow the valve to be closed by a spring or weightprovided for the purpose to stop the engine immediately after thegovernor ceases to operate, the said pin d, being attached to thegovernor rod, and the said slot or bearing face a, and escape opening b,being in or upon the lever of the throttle valve or cutoff or what isequivalent, the pin being attached to the said lever and the slot orbearing face and escape opening being in the connecting rod of thegovernor or in a plate connected therewith, or what is equivalent by atoothed rack and segment substantially as herein described.

JOHN TREMPER.

Vitness'es:

`PUsv R. MCNEILLE, JN0. R. MGNEILLE.

